A Nest of Protoceratops andrewsi (Dinosauria, Ornithischia)

D. E. Fastovsky; D. B. Weishampel; M. Watabe; R. Barsbold; KH. Tsogtbaatar; P. Narmandakh

doi:10.1666/11-008.1

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D. E. Fastovsky,¹ D. B. Weishampel,² M. Watabe,³ R. Barsbold,⁴ KH. Tsogtbaatar,⁵ P. Narmandakh⁶

¹Department of Geosciences, University of Rhode Island, Kingston, RI 02881, USA, < > defastov@uri.edu
²Center for Functional Anatomy and Evolution, Johns Hopkins University, Baltimore, MD 21205, USA, < > dweisha1@jhmi.edu
³Hayashibara Museum of Natural Sciences, 2-3. Shimoishii-1, Okayama 700-0907, Japan, < > moldavicum@pa2.so-net.ne.jp
⁴Director, Paleontological Center, Mongolian Academy of Sciences, Peace Avenue 63 Ulaanbaatar 210351, Mongolia, < > barsgeodin@magicnet.mn
⁵Paleontological Center, Mongolian Academy of Sciences, Peace Avenue 63 Ulaanbaatar, Ulaanbaatar 210351, Mongolia, < > paleolab@magicnet.mn
⁶Paleontological Center, Mongolian Academy of Sciences, Ulaanbaatar 210351, Mongolia

Abstract

A remarkable specimen of the small neoceratopsian dinosaur Protoceratops andrewsi (Late Cretaceous, Mongolia) reveals the first nest of this genus, complete with fifteen juveniles. The relatively large size of the individuals and their advanced state of development suggests the possibility that Protoceratops juveniles remained and grew in their nests during at least the early stages of postnatal development. The nest further implies that parental care and sociality are phylogenetically basal behaviors in Ceratopsia. Finally, it reaffirms the conclusion that Protoceratops lived (and died) in the sandy aeolian dune fields of the central Asian craton.

The Paleontological Society

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D. E. Fastovsky, D. B. Weishampel, M. Watabe, R. Barsbold, KH. Tsogtbaatar, and P. Narmandakh "A Nest of Protoceratops andrewsi (Dinosauria, Ornithischia)," Journal of Paleontology 85(6), 1035-1041, (1 November 2011). https://doi.org/10.1666/11-008.1

Accepted: 1 May 2011; Published: 1 November 2011

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